A quick-change device for the clamping mechanism of a paper cutter

Abstract

This utility model relates to a quick-change device for the clamping mechanism of a paper cutter, which includes a frame, a cutter, a clamping mechanism, and a quick-release assembly. The cutter is mounted on the frame, and the clamping mechanism is mounted on one side of the cutter. The clamping mechanism includes a lifting drive, a connecting frame, and a clamping block. The connecting frame is fixed to the lifting drive, and the clamping block is detachably connected to the connecting frame via the quick-release assembly. The quick-release assembly includes a fixing block, a clamping block, an adapter block, a bolt, and a turning handle. When the operator turns the turning handle, the bolt fixedly connected to the end of the handle will rotate along with it, causing the clamping block to move towards the fixing block. The wedge-shaped groove at the bottom of the clamping block and the wedge-shaped groove on the fixing block together form a receiving space that matches the wedge-shaped protrusion on the adapter block. A large positive pressure and friction are generated between the wedge-shaped groove and the wedge-shaped protrusion, which can firmly fix the clamping block on the connecting frame and prevent it from shifting due to vibration or force during the cutting process.

Description

Technical Field

[0001] This utility model relates to the field of paper cutters, and in particular to a quick-change device for the clamping mechanism of a paper cutter. Background Technology

[0002] In industries such as paper processing, printing, and packaging, paper cutters are key equipment for achieving precise paper cutting, and their performance directly affects product processing quality and production efficiency. With the increasing demand for diversified and personalized paper processing, the production process often requires changing the clamping mechanism to different specifications based on parameters such as paper material, thickness, and size. Currently, traditional methods for changing the clamping mechanism of paper cutters have many shortcomings.

[0003] The existing clamping mechanism is mostly connected to the paper cutter main unit using rigid fixing structures such as bolts and nuts. When replacing it, special tools such as wrenches and screwdrivers are needed to disassemble and install the fasteners one by one, which is cumbersome and time-consuming. In scenarios of mass production or frequent model changes, this replacement method will significantly increase the downtime of the equipment, reduce production efficiency, and make it difficult to meet the high-efficiency operation requirements of modern production lines.

[0004] Therefore, to address the problems of low efficiency, complex operation, high skill requirements for operators, and potential impact on equipment performance during the replacement of existing paper cutter clamping mechanisms, it is of great practical significance to develop a device that enables rapid, convenient, and precise replacement of the clamping mechanism. This would improve the production adaptability of paper cutters, reduce labor intensity, and ensure processing quality. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a quick replacement device for the clamping mechanism of a paper cutter.

[0006] The quick-change device for the clamping mechanism of a paper cutter provided by this utility model adopts the following technical solution:

[0007] A quick-change device for the clamping mechanism of a paper cutter includes a frame, a cutter, a clamping mechanism, and a quick-release assembly. The cutter is mounted on the frame, and the clamping mechanism is mounted on one side of the cutter. The clamping mechanism includes a lifting drive, a connecting frame, and a clamping block. The connecting frame is fixed to the lifting drive, and the clamping block is detachably connected to the connecting frame via the quick-release assembly. The quick-release assembly includes a fixing block, a clamping block, an adapter block, a bolt, and a turning handle. The fixing block is fixed to the connecting frame, and the adapter block is fixed to the back of the clamping block. The turning handle is rotatably connected to the clamping block, and the bolt is connected to the end of the turning handle. The top of the fixing block has a threaded hole, the clamping block has a wedge-shaped groove, and the bottom of the fixing block also has a corresponding wedge-shaped groove. The adapter block has a wedge-shaped protrusion.

[0008] Optionally, the clamping block is provided with a limiting rod, the limiting rod and the bolt are arranged parallel to each other, and the top of the fixing block is provided with a limiting hole, the limiting rod and the limiting hole are slidably engaged.

[0009] Optionally, a pressure plate is provided at the bottom of the clamping block, with one side of the pressure plate close to the cutter.

[0010] Optionally, the clamping block is provided with several sets of reinforcing ribs.

[0011] Optionally, the lifting drive is provided in two sets, with the two sets of lifting drives respectively located on both sides of the frame. The lifting drive is specifically a cylinder, and the output end of the cylinder is fixed on the connecting frame.

[0012] Optionally, the connecting frame has connecting grooves on both sides, the piston rod passes through the connecting grooves, and two sets of spaced limiting plates are fixed on the piston rod, the limiting plates abutting against the upper and lower walls of the connecting frame.

[0013] In summary, this utility model has at least one of the following beneficial technical effects:

[0014] 1. When the operator turns the screw handle, the bolt fixedly connected to the end of the handle will rotate along with it. Since the bolt and the threaded hole on the top of the fixing block form a threaded engagement, the characteristics of the threaded connection will convert the rotational motion of the bolt into linear motion along the axial direction, which will drive the clamping block to move towards the fixing block. The wedge groove at the bottom of the clamping block and the wedge groove on the fixing block together form a receiving space that matches the wedge protrusion on the adapter block. A large positive pressure and friction will be generated between the wedge groove and the wedge protrusion, which can firmly fix the clamping block on the connecting frame and prevent it from shifting due to vibration or force during the cutting process.

[0015] 2. The sliding fit between the limiting rod and the limiting hole effectively restricts the rotational freedom of the clamping block, allowing it to move only in a straight line along the bolt axis. This constraint ensures that the clamping block maintains a stable posture as it approaches or moves away from the fixed block, preventing wobbling or deflection from affecting the precise fit of the wedge structure and further improving the smoothness of the replacement process.

[0016] 3. The spaces on both sides of the frame are relatively independent and far away from the core cutting area of ​​the cutter and the paper feeding path. Placing the cylinder here can avoid occupying the top space and reserve sufficient space for operations such as cutter maintenance and paper adjustment. Operators do not need to work in the narrow top area. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a quick-change device for the clamping mechanism of a paper cutter.

[0018] Figure 2 This is a schematic diagram showing the location of the clamping mechanism and quick-release components.

[0019] Figure 3 This is a schematic diagram of the other side of the clamping mechanism and quick-release assembly.

[0020] Figure 4 This is an exploded view of the quick-release assembly.

[0021] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Cutter; 3. Clamping mechanism; 31. Lifting drive; 32. Connecting frame; 33. Clamping block; 331. Pressure plate; 332. Reinforcing rib; 4. Quick release assembly; 41. Fixing block; 42. Clamping block; 43. Adaptor block; 44. Bolt; 45. Tightening handle; 46. Wedge groove; 47. Wedge protrusion; 48. Limiting rod; 49. Limiting hole; 5. Connecting groove; 6. Limiting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] This utility model discloses a quick-change device for the clamping mechanism of a paper cutter. (Refer to...) Figure 1-4A quick-change device for the clamping mechanism of a paper cutter includes a frame 1, a cutter 2, a clamping mechanism 3, and a quick-release assembly 4. The cutter 2 is mounted on the frame 1, and the clamping mechanism 3 is located on one side of the cutter 2. The clamping mechanism 3 includes a lifting drive 31, a connecting frame 32, and a clamping block 33. The connecting frame 32 is fixed to the lifting drive 31, and the clamping block 33 is detachably connected to the connecting frame 32 via the quick-release assembly 4. The quick-release assembly 4 includes a fixing block 41, a clamping block 42, an adapter block 43, a bolt 44, and a turning handle 45. The fixing block 41 is fixed to the connecting frame 32, the adapter block 43 is fixed to the back of the clamping block 33, and the turning handle 45 is rotatably connected to the clamping block 42. The end of the turning handle 45 is connected to the bolt 44. The top of the fixing block 41 is provided with a threaded hole, and the clamping block 42 is provided with a wedge-shaped groove 46. The bottom of block 41 is also provided with a corresponding wedge groove 46, and the adapter block 43 is provided with a wedge protrusion 47. With this design, when the operator rotates the screw handle, the bolt 44 fixedly connected to the end of the handle will rotate along with it. Since the bolt 44 and the threaded hole on the top of the fixed block 41 form a threaded engagement, the threaded connection will convert the rotational motion of the bolt 44 into a linear motion along the axial direction, which will drive the clamping block 42 to move towards the fixed block 41. The wedge groove 46 at the bottom of the clamping block 42 and the wedge groove 46 on the fixed block 41 together form a receiving space that matches the wedge protrusion 47 on the adapter block 43. A large positive pressure and friction will be generated between the wedge groove 46 and the wedge protrusion 47, which can firmly fix the clamping block 33 on the connecting frame 32 and prevent it from shifting due to vibration or force during the cutting process.

[0026] The clamping block 42 is equipped with a limiting rod 48, which is parallel to the bolt 44. A corresponding limiting hole 49 is provided on the top of the fixing block 41. The limiting rod 48 slides into the limiting hole 49. This design effectively restricts the rotational freedom of the clamping block 42, ensuring that it can only move linearly along the axis of the bolt 44. This constraint ensures that the clamping block 42 maintains a stable posture as it approaches or moves away from the fixing block 41, preventing wobbling or deflection from affecting the precise fit of the wedge structure and further improving the smoothness of the replacement process.

[0027] The bottom of the clamping block 33 is provided with a pressure plate 331. One side of the pressure plate 331 is close to the cutter 2. Several sets of reinforcing ribs 332 are provided on the clamping block 33. During operation, the clamping block 33 needs to withstand the pressure transmitted by the lifting drive 31 and the reaction force of the paper. It may deform after long-term use. The setting of the reinforcing ribs 332 can increase the moment of inertia of the section of the clamping block 33, thereby improving the rigidity and deformation resistance of its overall structure.

[0028] There are two sets of lifting drives 31, which are respectively set on both sides of the frame 1. The lifting drive 31 is a cylinder. The output end of the cylinder is fixed on the connecting frame 32. The connecting frame 32 has connecting grooves 5 on both sides. The piston rod passes through the connecting grooves 5. Two sets of spaced limiting plates 6 are fixed on the piston rod. The limiting plates 6 abut against the upper and lower walls of the connecting frame 32. The spaces on both sides of the frame 1 are relatively independent and far away from the core cutting area of ​​the cutter 2 and the paper conveying path. Placing the cylinder here can avoid occupying the top space and reserve sufficient space for the maintenance of the cutter 2, paper adjustment and other operations. The operator does not need to work in the narrow top area.

[0029] Furthermore, the two sets of cylinders are arranged on both sides of the frame 1 to form a symmetrical power output structure. Compared with a single-set drive, this dual-side drive method can make the connecting frame 32 and the clamping mechanism 3 more evenly stressed during the lifting process. After the piston rod passes through the connecting groove 5 of the connecting frame 32, it abuts against the upper and lower walls of the connecting frame 32 through two sets of spaced limiting plates 6 to form a clamping fixing structure. Compared with the traditional single-point fixing, this design can transmit the driving force of the cylinder to the connecting frame 32 more evenly.

[0030] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A quick-change device for the clamping mechanism of a paper cutter, characterized in that: The assembly includes a frame (1), a cutter (2), a clamping mechanism (3), and a quick-release assembly (4). The cutter (2) is mounted on the frame (1), and the clamping mechanism (3) is mounted on one side of the cutter (2). The clamping mechanism (3) includes a lifting drive (31), a connecting frame (32), and a clamping block (33). The connecting frame (32) is fixed to the lifting drive (31), and the clamping block (33) is detachably connected to the connecting frame (32) via the quick-release assembly (4). The quick-release assembly (4) includes a fixing block (41), a clamping block (42), and an adapter block (43). The fixture (41) is fixed to the connecting frame (32), the adapter block (43) is fixed to the back of the clamping block (33), the screw handle (45) is rotatably connected to the clamping block (42), and the end of the screw handle (45) is connected to the bolt (44). The top of the fixture (41) is provided with a threaded hole, the clamping block (42) is provided with a wedge groove (46), the bottom of the fixture (41) is also provided with a corresponding wedge groove (46), and the adapter block (43) is provided with a wedge protrusion (47).

2. The quick-change device for the clamping mechanism of a paper cutter according to claim 1, characterized in that: The clamping block (42) is provided with a limiting rod (48), the limiting rod (48) and the bolt (44) are arranged parallel to each other, and the top of the fixing block (41) is provided with a limiting hole (49), and the limiting rod (48) and the limiting hole (49) are slidably engaged.

3. The quick-change device for the clamping mechanism of a paper cutter according to claim 1, characterized in that: The bottom of the clamping block (33) is provided with a pressure plate (331), and one side of the pressure plate (331) is close to the cutter (2).

4. A quick-change device for the clamping mechanism of a paper cutter according to claim 1, characterized in that: The clamping block (33) is provided with several sets of reinforcing ribs (332).

5. A quick-change device for the clamping mechanism of a paper cutter according to claim 1, characterized in that: The lifting drive (31) is provided in two sets, and the two sets of lifting drives (31) are respectively located on both sides of the frame (1). The lifting drive (31) is specifically a cylinder, and the output end of the cylinder is fixed on the connecting frame (32).

6. A quick-change device for the clamping mechanism of a paper cutter according to claim 5, characterized in that: The connecting frame (32) has connecting grooves (5) on both sides. The output end of the cylinder passes through the connecting grooves (5). Two sets of spaced limiting plates (6) are fixed on the output end of the cylinder. The limiting plates (6) abut against the upper and lower walls of the connecting frame (32).

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